pdnsd is vulnerable to a buffer overflow that may result in arbitrary code execution.
|Package||net-dns/pdnsd on all architectures|
|Affected versions||< 1.2.4|
|Unaffected versions||>= 1.2.4|
pdnsd is a proxy DNS server with permanent caching that is designed to cope with unreachable DNS servers.
The pdnsd team has discovered an unspecified buffer overflow vulnerability. The PROTOS DNS Test Suite, by the Oulu University Secure Programming Group (OUSPG), has also revealed a memory leak error within the handling of the QTYPE and QCLASS DNS queries, leading to consumption of large amounts of memory.
An attacker can craft malicious DNS queries leading to a Denial of Service, and potentially the execution of arbitrary code.
There is no known workaround at this time.
All pdnsd users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.4-r1"
May 10, 2006
May 10, 2006: 01